Hair clamp



Sept 6, 1932- K. G. sTROHr-:R 1,875,949

AHAIR CLAMP Filed Oct. 30. 1931 INVENTOR Kfm/ 6. 5 7907115@ BY A iATTORNEYS Patented Sept. 6, 1932 UNITED STATES PATENT GFFICE HAIR CLAMPApplication filed October 30, 1931.

This invention relates to improvements in the art of hair waving andrefers more particularly to a device for clamping a strand of hairpreparatory to the waving treatment.

Hair clamps are known comprising bars connected with each other by meansof a piveted link. It has been found that such clumps are quiteinconvenient in use as a considerable amount of time is spent in o eningand closing them during their app ication to a strand and removaltherefrom.

Both hands of an operator are needed to open the hair clamp and thisoperation takes quite n longT time. Furthermore, the hair clamp 15.becomes quite hot durin the hair waving process and the hands ofz theoperators are liable .to be injured by its heated metal parts whileopening and removing the clamp.

An object of this invention is to eliminate the above mentioneddrawbacks by providing a hair clamp which can be easily and quicklyopened by the use of one hand only, thus leavinl;r the other hand of theo erator free.

Another object is to provide a hair clamp Z5 haring a lock requiring thesmallest possible surface of contact between the hand and the ehunpwhile opening said lock, said surface being situated furthest from theheated parts of the clump for the purpose of eliminating a0 the dangerof burning the hands of the operntor.

A further object is to provide a hair clamp having,r a lock which cannotspring open accidentally while the hair is being treated.

Still another object is to provide a hair clamp having a lock by meansof which the two hars of the clamp can be brought into very closerelationshi i with each other, thus o enabling the strand of hair to beheld tightly during the hair waving process.

'lhel invention will appear more clearly from the following detaileddescription, when tanken in connection with the accompanying drawing,which illustrates preferred embodiments of the inventive idea` In thedrawing- Figure 1 is a perspective view of a hair elnm p, showing thesame in opened position;

Figure 2 is a plan view of the hair clamp Serial No. 572,008.

in closed position, with parts broken away and shown in section;

Figure 3 is an end view of the hair clamp;

F igurr 4 is a transverse section on the line 4-4 of Figure 2; and 55Figures 5 and 6 show modified forms of their spring connecting the twoclamp bars.

The hair clamp comprises two bars 7 and 8 connected with each other bymeans of a resilient spring 9, the two ends of the spring 60 9 beingsoldered or otherwise secured to adjacent ends of said bars. The bars 7and 8 have the shape of narrow, flat strips and are interposed betweenheat-insulating straps 10, 11 and 12, 13, preferably made of cork. 65The bar '7 is surrounded by a heat-insulating jacket 14, whereas the bar8 is surrounded by a similar jacket 15. Both jackets are preferably madeof rubber and are provided with grooves 16 which promote the circulationof air during the waving recess, the scalp being effectively protectedrom the heat issuing from the hair waving machine by the air circulatingin these grooves.

The bar 8 is provided with a pivot 17 car- 75 rying a substantiallyU-shaped lever 18 adapted to receive the ends of the bars '7 and 8 andto lock the clamp by sliding over the cam edge of the bar 7 into a notch19 of said bar. Due to this arrangement the lever 18 cannot s ring backwhile the hair clamp is closed, t e two insulating jackets 14 and 15being pressed tightly against each other in this closed position. Thelever 18 is provided with an extension 2O used as a finger piece 85 toopen and close the hair clamp.

In operation a strand of hair adjacent the roots is passed between thetwo jackets 14 and 15 of the open hair clamp` which then can be lockedby pressing its two ends against each other and by swinging the lever 18over the cam edge of the bar 7 until it reaches the notch 19. Thisoperation can be easily performed with one hand. The surfaces of the 05jackets 14 and 15 provided with grooves 16 should be closest to the headso as to provide a circulation of air between the head and the clamp.

To open the hair clamp it is only necessary 2 Y A lj A 1,875,949

to press a finger against the extension 20, thus swinging the lever 18to the position shown in dotted lines in Fi re 2. Due to the action ofthe Spring 9, t e clamp will then open 5 automatically and will releasethe strand of hair situated between the jackets 14 and 15. In themodification shown in Figure 5, the bars 7- and-8 are interconnected bymeans of :l bowed spring 21 having but a single coil, 10 whereas thespring 9 shown in Figure 2 consists oftwo coils.

According to the modification shown 1n Figure 6, thetwqjgpfga bowedspring 22 are not rigidly clggedliviththe bars 7 and 8, but are situated#suitable recesses 23 formed in the endsofthese bars.

W'hat is claimedf's: A hair ela'mpkfo usein permanent Waving processes,coiilgplrising cooperatin clamping bars having Straight opposed aces be-.Aween which a strand of hair is adapted to be held, there bein anunobstructed space between the:ends osaid bars whereby said strands maybe evenly distributed along the same and securel held by said faces, aspring at one endl of sald clamp forming a connection between adjacentends of'said bars and operating tospread the latter apart, said spring aso providing a yieldlng'connection 3 between the ends which-it connectsso as to permit of a. slight spreading-.movement of the latter relativeto theop'positeend's of .the bars when a strandof hair is clampedtherebetween,A anda/latchin device atthe latter'ends of said bars pivoteto one of them and-en` gugeable'with the other for holding the 'sametogether against the spreading action of said spring.

ln testimony whereof, I have aflixed my 0 signature.

KARLGEORG STRHEILy

